22196591 has 2 divisors, whose sum is σ = 22196592. Its totient is φ = 22196590.

The previous prime is 22196569. The next prime is 22196609. The reversal of 22196591 is 19569122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22196591 - 2¹⁰ = 22195567 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22196501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11098295 + 11098296.

It is an arithmetic number, because the mean of its divisors is an integer number (11098296).

Almost surely, 2^22196591 is an apocalyptic number.

22196591 is a deficient number, since it is larger than the sum of its proper divisors (1).

22196591 is an equidigital number, since it uses as much as digits as its factorization.

22196591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 35.

The square root of 22196591 is about 4711.3258218892. The cubic root of 22196591 is about 281.0360891326.

The spelling of 22196591 in words is "twenty-two million, one hundred ninety-six thousand, five hundred ninety-one".